The first signs of Sharon Scully's disease showed up when, as an assistant attorney general, she was working on a grueling case against a Milford gas station accused of leaking pollutants into Long Island Sound. She had episodes of forgetfulness, like losing her glasses. She chalked it up to exhaustion. Scully understands the implications of her diagnosis. Preparing for the very uncertain future that comes with Alzheimer's demands special attention on many fronts, on the part of many people: the patient, spouses, children, friends, caregivers, doctors. There are personal and emotional tolls. And financial ones.